package org.lanqiao.practice_2;

public class Test_1 {
	public Test_1(){
		System.out.println("空");
	}
	public Test_1(int i){
		System.err.println(i);
	}

	public Test_1(double d){
		System.out.println(d);
	}
	public Test_1(String s){
		this();
		System.out.println(s);
	}
	

}
